Fireplace insert



FIG. 1 is a perspective view of an ornamental design for a fireplace insert.

FIG. 2 is a front elevation view of the fireplace insert of FIG. 1.

FIG. 3 is a rear elevation view of the fireplace insert of FIG. 1.

FIG. 4 is a left side elevation view of the fireplace insert of FIG. 1.

FIG. 5 is a right side elevation view of the fireplace insert of FIG. 1.

FIG. 6 is a top plan view of the fireplace insert of FIG. 1; and,

FIG. 7 is a bottom plan view of the fireplace insert of FIG. 1.

The broken line illustration of logs, vents, screw inserts, seams, control panel buttons and icons, and flanges represents portions of the fireplace insert that form no part of the claimed design. 

CLAIM The ornamental designs for a fireplace insert, as shown and described. 